Created
May 16, 2019 14:41
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Wordpress Walker 101
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<?php | |
class CustomWalker extends Walker { | |
public $tree_type = 'category'; | |
public $db_fields = array( | |
'parent' => 'parent', | |
'id' => 'term_id', | |
); | |
public function start_lvl( &$output, $depth = 0, $args = array() ) { | |
$output .= "<ul class='children'>\n"; | |
} | |
public function end_lvl( &$output, $depth = 0, $args = array() ) { | |
$output .= "</ul>\n"; | |
} | |
public function start_el( &$output, $item, $depth = 0, $args = array(), $current_object_id = 0 ) { | |
$output .= "<li>" . $item->name . "\n"; | |
} | |
public function end_el( &$output, $category, $depth = 0, $args = array() ) { | |
$output .= "</li>\n"; | |
} | |
} | |
$lists = array( | |
(object)[ | |
'term_id' => '1', | |
'name' => 'A', | |
'parent' => 0, | |
], | |
(object)[ | |
'term_id' => '2', | |
'name' => 'B', | |
'parent' => 0, | |
], | |
(object)[ | |
'term_id' => '3', | |
'name' => 'C', | |
'parent' => 0, | |
], | |
(object)[ | |
'term_id' => '4', | |
'name' => 'D', | |
'parent' => 1, | |
], | |
(object)[ | |
'term_id' => '5', | |
'name' => 'E', | |
'parent' => 4, | |
], | |
); | |
$mywalker = new CustomWalker(); | |
echo $mywalker->walk( $lists, 3 ); |
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